Fused plug



Oct. 24, 1939;

S. M. DEL CAMP FUSED PLUG Filed Nov. 5, 1936 Izwenior: Sapz'orw M Del Camp 1y W440i may Patented Oct. 24, 1939,

umrso STATES PATENT .OFFICE' w I com (or zoo-115.5)

This invention relates to electrical plug members or'the like and more particularly to plu members provided with a fuse used to bridge one of the circuit lines. 5 Referring to the drawing, in which I have illustrated a preferred embodiment of my invention: Figure. l is a front elevation of my improved electrical plug member; I

Fig. 2 is a top plan view of the plug member shown in Fig. 1; Fig. 3 is a side elevation of the plug member shown in Fig. 1;

Fig. 4 is a bottom plan view of the plug member shown in Figs. 1-3; Fig. 5 is a section taken'along the line 55 of fig. 2, part of the section passing through one of the contact terminals;

Fig. 6 is a section taken along the line 6 -61 Fig. 2; Fig. 7 is a section taken along the line 1-1 of Fig. l; v

Fig. 8. is a section taken along the line 8-8 ofv Fig. 5; and

Fig. 9 is a section taken on the line 9-9 of Fig. I. r

- A preferred form of my improved plug member, as illustrated in the drawing, has a body portion providing insulating plates i and 2 spaced one from another by'means of the washers 3. The

upper plate I carries a fuse clip assembly and wire-receiving lugs and flat metal contact terminals 4 extending beneath the plate 2 for engagement with a cooperating socket. The terminals 4 serve'also to maintain the insulating plates in 85 fixed relation in a manner hereinafter described. The plate (has a number of cut-away sides 5, as most clearly shown in Figs. 7 and 8. A cupshaped shield 6 is provided with shoulders (not shown) adapted to fit between the plates 1 and 2 40 so as to securev the shield to the plate in the manner described in United States Patent No;

2,031,564 issued to C. L. Knutson. The shield t is adapted toprotect the fuse as well as the wire connections, as will be understood by thoseskllied 4 in the art. Y

The top plate I is provided with a metallic conducting plate I having one side adjacent the outer surface of the plate 1,, as most clearly shown in Figs. 5 and 6. A pair of. fuse clips! and 9 are 50 located in spaced relation one to another on the outer side of the plate I. Each of the fuse clips has a base I! and upstanding spaced resilient side walls ll providing anopening for'receivi'ng opposed ends of a fuse II. The side walls Hp! 56. each'oftheclipslandlarebowedandadapted 'put together so as to provide a compact and. foolproof to expand when an end of.. the fuse ii is inserted therebetween and then contract to hold the fuse member in place. As a result of the particular construction of the clips 8 and 9 the fuse member may be readily removed or replaced. 5 The base ID of the fuse clip 8 is superposed upon an end of the metal conducting plate. I and the "clip 8 is secured tothe insulating plate I and at the same time fixed in electrical contact-with the conducting plate I through means such as a rivet 10 I3 (Fig. 9) extending through the partsa The cooperating clip 9 has a base portion 10 superposed upon aleg l4 (Fig. 6) of a wire-receiving lug IS. The clip 9 and the lug ii are secured to theplate by means such as a rivet i3 extending through the parts. The rivet l3 serves also to maintain the clip and wire-receiving lug in electrical contact. An aperture i5 is formed in the lug l5- (Fig. 5) in my preferred form for receiving a lead-out wire which may be soldered go to the lug. Another wire-receiving lug l6 (Figs. 7 and 8) is secured to the insulating plate I and fixed in permanent electrical contact to one of V the contact terminals 4 in a manner hereinafter described. A lead-out wire (not shown) may be soldered or otherwise secured to the lug IS.

The contact-terminals 4 are provided, in my preferred form, with a rectangular-shaped socket-engaging portion ll extending beneath the plate 2 as shown in Figs. 5 and 9. Shoulders I810 are formed at one end of the rectangular-sham portion of the terminals engaging the outer surface of the plate 2 (Figs. 5 and 9) and a shank ll extends upwardly between the shoulders through the plates I and 2 and the washers 3 as shown in 35 Fig. 5. The free end of the shank ll of each of the terminals 4 is preferably bifurcated so as to provide portions 20. The bifurcated portions II of one ofthe terminals 4 engage an outside surface of the metal conducting plate I (Figs. 5, 6, and 8) and the bifurcated portions Ill oi" theother terminal 4 engage an outside surface of the wire-receiving lug I6 (Figs. 7 and 8). As a result of this-construction the plates I and 2 and the respective metal conducting plate I and lug it are maintained in secure assembly between the shoulders l8 of the contact terminals and the bifurcated portions 20.. As a result of my invention! have provided a plug member of relatively simple construction I having a detachable fuse in series with one side of the line. The .parts of my improved plug memberv are inexpensively manufactured and easily Although I have illustrated and described a. preferred form of my invention, I do not wish to be limited thereby because the scope of my invention is best set forth in the following claims.

I'claim:

1. An electrical plug member comprising at least two insulating plates in superposed relation,

a pair oi contact terminals extending beneath said plates and having means securing said plates together, a pair of spaced fuse clips secured to the upper of said plates, means connecting one of said clips with one of said terminals, a wire-receiving means in electrical contact with said other clip, a wire-receiving means in electrical contact with the other of said terminals, and a shield cap as part of the plug assembly.

2. An electrical plug member comprising a pair of thin insulating plates in superposed relation, a pair of contact terminals extending beneath the lower of said plates, said terminals having spaced portions maintaining said plates between them for securing said plates together, a pair of spaced fuse clips secured to the upper of said plates, means electrically connecting one of said clips with one of said terminals, a wire-receiving lug in electrical contact with said other clip and a wire-receiving lug secured to the other of said --through said plates and beneath said plates for electrical connection with a cooperating socket member, one of said terminals having a portion at its free end engaging an outer surface of said metal plate whereby said metal plate is secured to said upper insulating plate and the other of said terminals having a portion "at its free end engaging said other wire-receiving lug whereby said lug is secured to said upper plate, and said terminals having a portion engaging the lower of said insulating plates whereby said plates are held together between the portions of said terminals engaging said respective metal plate andwire-receiving lug and the portions of said terminals engaging said lower plate.

SCIPIONE M. DEL CAMP. 

